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Junipor交換機 ssh_exchange_identification: Connection closed by remote host

可根據以下步驟使其ssh服務恢復正常:

Step1 check the files are present in the directory by login in to the switch and you should be in the shell

root@SUNNY:RE:0% ls /etc/ssh/ssh*
/etc/ssh/ssh_host_dsa_key       /etc/ssh/ssh_host_rsa_key
/etc/ssh/ssh_host_dsa_key.pub   /etc/ssh/ssh_host_rsa_key.pub
/etc/ssh/ssh_host_key           /etc/ssh/ssh_known_hosts


/etc/ssh/ssh_host_key.pub

root@SUNNY:RE:0% ls /config/ssh*
/config/ssh_host_dsa_key        /config/ssh_host_key
/config/ssh_host_dsa_key.pub    /config/ssh_host_key.pub
/config/ssh_host_ecdsa_key      /config/ssh_host_rsa_key
/config/ssh_host_ecdsa_key.pub  /config/ssh_host_rsa_key.pub




Step 2 Make two directory under the /etc/ by following  command


root@SUNNY:RE:0% cd /etc
root@SUNNY:RE:0% mkdir test1
root@SUNNY:RE:0% mkdir test2
root@SUNNY:RE:0% ls ----- by issuing this command you will be able to see the directory test under /etc

fbtab                   newsyslog.conf.sys      sshd_netconf
fstab                   notices                 stunnel.conf
ftpusers                pam.conf                syslog.conf

gettytab                pam.conf.sys            termcap
group                   passwd                  termcap.small
group.sys               profile                test1
test2

step3 copy the files under /etc/ssh/ssh* to the directory test1 and also copy /config/ssh* to directory test2

root@SUNNY:RE:0% cp /etc/ssh/ssh* /etc/test1
root@SUNNY:RE:0% cp /config/ssh* /etc/test2
root@SUNNY:RE:0% ls /etc/test1
root@SUNNY:RE:0% ls /etc/test2

Step4 then you have to create a directory under the /var/
root@SUNNY:RE:0% cd /var/
root@SUNNY:RE:0% mkdir empty

重啟交換機:

request system reboot

後可正常登陸